April 17, 2014 4:33pm EDTApril 17, 2014 4:27pm EDTAccording to a book written by the man formerly responsible for wearing the Mr. Met costume, President Bill Clinton's security deatil once threatened to put a bullet in his head.Mr. Met is all smiles, most of the time.(AP Photo)

In a new book written by AJ Mass, the man who for years donned the Mr. Met costume for the New York Mets, it was revealed that a Secret Service member once threatened to put a bullet through his head during President Bill Clinton's trip to Shea Stadium in April of 1997.

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"The goal, of course, being the holy grail for all mascots -- a photo op and meet and greet with a sitting president. I have no illusion that this will actually work, but buoyed by my experience with Rachel Robinson, I figure it's worth a try. What do I have to lose?"

Mass proceeded through the first several security checkpoints before being held up by a member of the president's security detail.

"Mr. Met, here's the deal. You do whatever it is you normally do and go about your business as usual. We won't bother you anymore. I've made it clear that you no longer need to be searched at the checkpoints. Okay?" he told Mass. "Now listen to me very carefully. We have snipers all around the stadium, just in case something were to happen. Like I said, do whatever it is you normally do. Nobody will bother you. But approach the president, and we go for the kill shot. Are we clear?"

The man in the suit repeated it again, slowly: "Approach the president, and we go for the kill shot. ARE-WE-CLEAR?"

While Mr. Met was probably all smiles on the outside, Mass must have been sweating bullets, the non-deadly kind, on the interior of the giant bobble head suit.